diff --git a/src/vppinfra/vector/array_mask.h b/src/vppinfra/vector/array_mask.h
index ba22d79..3d4a82a 100644
--- a/src/vppinfra/vector/array_mask.h
+++ b/src/vppinfra/vector/array_mask.h
@@ -57,6 +57,7 @@
       u32x4 mask4 = u32x4_splat (mask);
       *(u32x4u *) src &= mask4;
       *(u32x4u *) (src + n_elts - 4) &= mask4;
+      return;
     }
 #endif